vcirc_spherical_symmetry

deprojected_sersic_models.utils.vcirc_spherical_symmetry(R=None, menc=None)

Determine vcirc for a spherically symmetric mass distribution:

\[\begin{split}v_{\mathrm{circ}}(R) = \sqrt{\\frac{G M_{\mathrm{enc}}(R)}{R}}\end{split}\]

Parameters:

• R (float or array_like) – Radi[us/i] at which to calculate the circular velocity [kpc]

• menc (float or array_like) – Enclosed mass at the given radii [Msun]

Returns:

vcirc – Circular velocity as a function of radius [km/s]

Return type:

float or array_like